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A novel dual-band dual-polarized shared-aperture antenna with high isolation

Published online by Cambridge University Press:  04 May 2020

Jiachen Xu*
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Bozhang Lan
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Jiakai Zhang
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Chenjiang Guo
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Jun Ding
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
*
Author for correspondence: JiaChen Xu, E-mail: xujiachen9151@outlook.com

Abstract

This paper presents a novel dual-band (DB) dual-polarized (DP) shared aperture antenna with high isolation by using a combination of microstrip dipoles and dielectric resonator antennas (DRAs) for S and C bands, respectively. In the S band, two sets of proximity coupled stacked microstrip dipoles which crossed at the center are employed to achieve dual-linear polarization (DLP) and obtain desired bandwidth (BW), isolation, and pure polarization. The rectangle DRA with hybrid feed is selected as the C band element for its advantages of small base area and high isolation, and a 2 × 2 array is presented with the “pair-wise” anti-phase feed technique to achieve a low cross-polarized level. Moreover, benefited from the back feed scheme, the proposed antenna has a symmetrical structure and has the potential of expanding into a larger aperture. The proposed antenna has been manufactured and measured, and the results agree well with simulations, which prove the validity of the proposed design.

Type
Antenna Design, Modelling and Measurements
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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References

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A novel dual-band dual-polarized shared-aperture antenna with high isolation
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